The objective of the present work was to analyze the interrelationship between the aerobic degradation of BPA and readily biodegradable substrates by activated sludge (AS) in semi-continuous reactors (SCRs). AS were obtained from three SCRs fed with glucose, acetate or peptone. AS from these reactors were used as inocula for three SCRs that were fed with each biogenic substrate, and for three SCRs that were fed with the biogenic substrate and BPA. In all cases, dissolved organic carbon (DOC), BPA, total suspended solids (TSS) and respirometric measurements were performed. Although BPA could be removed in the presence of all the tested substrates, AS grown on acetate exhibited the longest acclimation to BPA. Reactors fed with peptone attained the lowest TSS concentration; however, these AS had the highest specific BPA degradation rate. Specific DOC removal rates and respirometric measurements demonstrated that the presence of BPA had a negligible effect on the removal of the tested substrates. A mathematical model was developed to represent the evolution of TSS and DOC in the SCRs as a function of the operation cycle. Results suggest that the main effect of BPA on AS was to increase the generation of microbial soluble products. This work helps to understand the relationship between the biodegradation of BPA and readily biodegradable substrates.

中文翻译：

---

在半连续反应器中，BPA的好氧降解与活性污泥易于生物降解的底物之间的相互依赖性。

本工作的目的是分析半连续反应器（SCR）中BPA的好氧降解与活性污泥（AS）易于生物降解的底物之间的相互关系。AS从三个装有葡萄糖，乙酸盐或蛋白p的SCR中获得。这些反应器的AS用作接种每种生物底物的三个SCR的接种物，以及接种生物底物和BPA的三个SCR的接种物。在所有情况下，均进行了溶解有机碳（DOC），BPA，总悬浮固体（TSS）和呼吸测定的测量。尽管可以在所有测试底物的存在下去除BPA，但在乙酸盐上生长的AS表现出最长的BPA适应性。喂入蛋白ept的反应器达到最低的TSS浓度。但是，这些AS的特定BPA降解率最高。特定的DOC去除率和呼吸测量结果表明，BPA的存在对被测底物的去除影响可忽略不计。开发了一个数学模型来表示SCR中TSS和DOC的演变与运行周期的关系。结果表明，BPA对AS的主要作用是增加微生物可溶性产物的产生。这项工作有助于理解BPA的生物降解与易于生物降解的底物之间的关系。结果表明，BPA对AS的主要作用是增加微生物可溶性产物的产生。这项工作有助于理解BPA的生物降解与易于生物降解的底物之间的关系。结果表明，BPA对AS的主要作用是增加微生物可溶性产物的产生。这项工作有助于理解BPA的生物降解与易于生物降解的底物之间的关系。